Preheat your oven to 475°F (245°C).
Roll out the pizza crust on a floured surface to your desired thickness.
Transfer the crust to a pizza stone or baking sheet.
Spread the pizza sauce evenly over the crust.
Sprinkle shredded mozzarella cheese over the sauce.
Arrange the sliced grilled chicken on top of the cheese.
Add the thinly sliced red onion and diced bell peppers.
Drizzle olive oil over the toppings and season with Italian seasoning, salt, and pepper.
Bake in the preheated oven for 15-20 minutes, or until the crust is golden brown.
Remove from the oven and garnish with fresh basil leaves before slicing.